gozi_ifsb | fa822b09cf153f7e38073e0f6a78795af2ec6620d0fd4a88d0b9226f0a0c3448

General

Target

order-06.010.2021.doc
Size

45KB
MD5

08bfdea676168b15bcbc8d1dfef36e77
SHA1

e07427f180773ef0b2709298c276e70dcac94058
SHA256

fa822b09cf153f7e38073e0f6a78795af2ec6620d0fd4a88d0b9226f0a0c3448
SHA512

a6bc65a833c4f5f1ba9148d5a324773f6bcaf609ee0a541e42bcbdf41fb826491861cc304809626dfd4c1bca026ace9bc910726a90dba861363e3e40571ab4f6

Score

10^/10

gozi_ifsb 6000 banker trojan

Malware Config

Extracted

Family

gozi_ifsb

Botnet

6000

C2

authd.feronok.com

app.bighomegl.at

Attributes

build
250204
exe_type
loader
server_id
580

rsa_pubkey.base64

serpent.plain

Signatures

Gozi, Gozi IFSB
Gozi ISFB is a well-known and widely distributed banking trojan.
banker trojan gozi_ifsb

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

explorer.exe

description	pid	pid_target	process	target process
Parent C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE is not expected to spawn this process	1848	1072	explorer.exe	WINWORD.EXE

Blocklisted process makes network request 1 IoCs

Processes:

mshta.exe

flow pid process

7 1764 mshta.exe
Downloads MZ/PE file
Loads dropped DLL 1 IoCs

Processes:

regsvr32.exe

pid process

1752 regsvr32.exe
Drops file in Windows directory 1 IoCs

Processes:

WINWORD.EXE

description ioc process

File opened for modification C:\Windows\Debug\WIA\wiatrace.log WINWORD.EXE
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Office loads VBA resources, possible macro or embedded object present

flow	pid	process
7	1764	mshta.exe

pid	process
1752	regsvr32.exe

description	ioc	process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	WINWORD.EXE

Modifies Internet Explorer settings 1 TTPs 10 IoCs

adware spyware

Modify Registry

T1112

Processes:

WINWORD.EXEmshta.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Main	mshta.exe
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

WINWORD.EXE

pid process

1072 WINWORD.EXE

Suspicious use of SetWindowsHookEx 16 IoCs

Processes:

WINWORD.EXE

pid	process
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE
1072	WINWORD.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

WINWORD.EXEexplorer.exemshta.exe

description	pid	process	target process
PID 1072 wrote to memory of 1848	1072	WINWORD.EXE	explorer.exe
PID 1072 wrote to memory of 1848	1072	WINWORD.EXE	explorer.exe
PID 1072 wrote to memory of 1848	1072	WINWORD.EXE	explorer.exe
PID 1072 wrote to memory of 1848	1072	WINWORD.EXE	explorer.exe
PID 1776 wrote to memory of 1764	1776	explorer.exe	mshta.exe
PID 1776 wrote to memory of 1764	1776	explorer.exe	mshta.exe
PID 1776 wrote to memory of 1764	1776	explorer.exe	mshta.exe
PID 1776 wrote to memory of 1764	1776	explorer.exe	mshta.exe
PID 1072 wrote to memory of 1380	1072	WINWORD.EXE	splwow64.exe
PID 1072 wrote to memory of 1380	1072	WINWORD.EXE	splwow64.exe
PID 1072 wrote to memory of 1380	1072	WINWORD.EXE	splwow64.exe
PID 1072 wrote to memory of 1380	1072	WINWORD.EXE	splwow64.exe
PID 1764 wrote to memory of 1752	1764	mshta.exe	regsvr32.exe
PID 1764 wrote to memory of 1752	1764	mshta.exe	regsvr32.exe
PID 1764 wrote to memory of 1752	1764	mshta.exe	regsvr32.exe
PID 1764 wrote to memory of 1752	1764	mshta.exe	regsvr32.exe
PID 1764 wrote to memory of 1752	1764	mshta.exe	regsvr32.exe
PID 1764 wrote to memory of 1752	1764	mshta.exe	regsvr32.exe
PID 1764 wrote to memory of 1752	1764	mshta.exe	regsvr32.exe

C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\order-06.010.2021.doc"
1⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1072

C:\Windows\explorer.exe
"C:\Windows\explorer.exe" c:\programdata\repoLnk.hta
2⤵
- Process spawned unexpected child process
PID:1848

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:1380

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Suspicious use of WriteProcessMemory
PID:1776

C:\Windows\SysWOW64\mshta.exe
"C:\Windows\SysWOW64\mshta.exe" "C:\ProgramData\repoLnk.hta"
2⤵
- Blocklisted process makes network request
- Modifies Internet Explorer settings
- Suspicious use of WriteProcessMemory
PID:1764

C:\Windows\SysWOW64\regsvr32.exe
"C:\Windows\System32\regsvr32.exe" c:\users\public\repoLnk.jpg
3⤵
- Loads dropped DLL
PID:1752

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\ProgramData\repoLnk.hta
MD5
f490f8cb8e5e5e86da051604e206c425

SHA1
e988db88aece30bcc54237e6979a45dfe7583547

SHA256
83c9087f95215506ccf40f1566692f4c75326d5a637c01c364dd3068e26cdd26

SHA512
6504820da57375e20a5ff840e78d149d997b6591d15b229fedcdce66f351308699a9cacc423e3ae88dc4fd3295bc821d553f215f1d3da8d39b17021451e5f01f

Download Submit
\??\c:\users\public\repoLnk.jpg
MD5
8d8ea9bf2fa6b8e8069780321b72d358

SHA1
ad8f64449bc128647574f208b3e58d4840f64240

SHA256
4c6ecbce8dab3b4b29274d3f58f7023a6322df5e469d8de6d24571bcff642714

SHA512
eda568a6d34940132e1426f6cd3e597519e8f80847e0bc540cc541f37dee9e456e8395fa3b2ac544e55584eaea9b481baf7402d3f8cc1a299e907e83fb035318

Download Submit
\Users\Public\repoLnk.jpg
MD5
8d8ea9bf2fa6b8e8069780321b72d358

SHA1
ad8f64449bc128647574f208b3e58d4840f64240

SHA256
4c6ecbce8dab3b4b29274d3f58f7023a6322df5e469d8de6d24571bcff642714

SHA512
eda568a6d34940132e1426f6cd3e597519e8f80847e0bc540cc541f37dee9e456e8395fa3b2ac544e55584eaea9b481baf7402d3f8cc1a299e907e83fb035318

Download Submit
memory/1072-60-0x000000006FE01000-0x000000006FE03000-memory.dmp

Filesize
8KB

Download
memory/1072-61-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1072-76-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1072-59-0x0000000072381000-0x0000000072384000-memory.dmp

Filesize
12KB

Download
memory/1380-67-0x0000000000000000-mapping.dmp

Download
memory/1752-73-0x0000000067750000-0x000000006775D000-memory.dmp

Filesize
52KB

Download
memory/1752-70-0x0000000075561000-0x0000000075563000-memory.dmp

Filesize
8KB

Download
memory/1752-69-0x0000000000000000-mapping.dmp

Download
memory/1752-74-0x0000000067750000-0x00000000677FF000-memory.dmp

Filesize
700KB

Download
memory/1752-75-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download
memory/1764-66-0x0000000000000000-mapping.dmp

Download
memory/1848-63-0x000007FEFB881000-0x000007FEFB883000-memory.dmp

Filesize
8KB

Download
memory/1848-62-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads